#!/bin/bash
# Create (or reuse) a GitHub release and upload the JASP tarball to it.
# Uses the REST API directly so the workflow does not depend on `gh` being
# present in the runner image.
#
#   GH_TOKEN   PAT with `contents: write` on the target repo   (required)
#   GH_OWNER   GitHub account owning the release repo          (required)
#   GH_REPO    release repo name        (default jasp-desktop-bin)
#   TAG        release tag, e.g. v0.98.1-1                     (required)
#   ASSET      path to the tarball to upload                   (required)

set -euo pipefail

: "${GH_TOKEN:?GH_TOKEN is required}"
: "${GH_OWNER:?GH_OWNER is required}"
: "${TAG:?TAG is required}"
: "${ASSET:?ASSET is required}"
GH_REPO="${GH_REPO:-jasp-desktop-bin}"

API="https://api.github.com/repos/${GH_OWNER}/${GH_REPO}"
UPLOADS="https://uploads.github.com/repos/${GH_OWNER}/${GH_REPO}"
AUTH=(-H "Authorization: Bearer ${GH_TOKEN}" -H "Accept: application/vnd.github+json")

asset_name="$(basename "$ASSET")"

echo ":: looking for existing release $TAG"
release_id="$(curl -sSf "${AUTH[@]}" "${API}/releases/tags/${TAG}" 2>/dev/null \
  | python3 -c 'import json,sys; print(json.load(sys.stdin).get("id",""))' 2>/dev/null || true)"

if [[ -z "$release_id" ]]; then
  echo ":: creating release $TAG"
  release_id="$(curl -sSf -X POST "${AUTH[@]}" "${API}/releases" \
    -d "$(python3 -c '
import json, os
print(json.dumps({
    "tag_name": os.environ["TAG"],
    "name": "JASP " + os.environ["TAG"],
    "body": os.environ.get("RELEASE_NOTES", ""),
    "draft": False,
    "prerelease": False,
}))')" | python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])')"
else
  echo ":: reusing release $release_id"
  # Replace a same-named asset so re-runs are idempotent.
  old="$(curl -sSf "${AUTH[@]}" "${API}/releases/${release_id}/assets" \
    | python3 -c "
import json, sys
name = '${asset_name}'
print(next((a['id'] for a in json.load(sys.stdin) if a['name'] == name), ''))
")"
  if [[ -n "$old" ]]; then
    echo ":: deleting previous asset $old"
    curl -sSf -X DELETE "${AUTH[@]}" "${API}/releases/assets/${old}"
  fi
fi

echo ":: uploading $asset_name ($(du -h "$ASSET" | cut -f1))"
curl -sSf -X POST "${AUTH[@]}" \
  -H "Content-Type: application/zstd" \
  --data-binary "@${ASSET}" \
  "${UPLOADS}/releases/${release_id}/assets?name=${asset_name}" >/dev/null

echo ":: uploaded to https://github.com/${GH_OWNER}/${GH_REPO}/releases/tag/${TAG}"